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Calculating the number of new and returning customers is a recurring question. I would say this is a “classical” Business Intelligence problem, very common in marketing department. I worked on these problems with many customers, with small and large datasets, Read More...

I had an issue in a query that reminded me a few details naming columns created by ADDCOLUMNS. When you specify a simple name in ADDCOLUMNS, you can use it later, for example in a SUMMARIZE or in a FILTER expression, such as in the following example (see Read More...

I recently wrote an article on SQLBI describing the dynamic calculation of stock inventory in DAX. With this technique, you can avoid creating a snapshot fact table just to store the inventory stock for every day and every product, creating a table that Read More...

I'm so happy that DAX Studio finally supports Excel 2013! As Darren Gosbell described in his blog , this release has a few internal changes that will better support future enhancements. I will port the code to capture the query plan for a query in this Read More...